AnalysisConfiguration / ClearingAndReprocessingOptions

Clearing and Reprocessing options:

Clear everything will remove all the loaded runs from the analysis session. It will not however remove the runs from the disk, and it will not close any of the open windows, or change any of the current settings

Clear all track markers does as it suggests, it clears all the currently set track markers, and so all the lap and sector times, and any other measurements based on the track markers etc